摘要
较详细地介绍了一种超声波测距系统及根据该系统设计、研制的汽车倒车防撞测距报警器。它能在汽车倒车时自动检测并显示车尾与最近障碍物之间的距离。当到达安全极限距离时，它能发出声光报警，提醒司机刹车。另外在倒车过程中它还能发出“倒车，请注意”的报警声提醒行人注意，并能监视汽车蓄电池电压。
This paper intruduces minutely an ultrasonic distance measurement system and a kind of alarm designed and developped according to this system. When a car′s backing up, it can detect and display automatically the distance between the tail of the car and the nearest obstacle. If the distance is to be safe value limitted, the device will give a sounding and light alarm to warn the driver braking. Additionally, it can announce : 'Attention please, car′s backing up' to remind the pedestrains when backing and monitor the voltage of the car′s battery, so as to keep the device working normally.
出处
《汽车电器》
1997年第1期2-4,共3页
Auto Electric Parts
关键词
超声波
测距
汽车
倒车
报警器
碰撞
ultrasonic distance measurement car′s back up alarm
